Fluent 2 Design System

Overview Fluent 2 is the next evolution of Microsoft's design system. It provides designers and developers with UI kits, component libraries, and accessibility tools to build consistent Microsoft 365 experiences across Web, iOS, Android, and Windows. Fluent 2 replaces the original Fluent 1 system and is the foundation underpinning modern Microsoft products like Teams, Outlook, and Emoji rendering. Fluent 2 unifies the design-to-development workflow. Designers access Figma UI kits while developers reference platform-specific frameworks and token documentation. The system covers typography, color, icon scaling, focus order, and color contrast checking so teams can ship accessible, on-brand interfaces without reinventing foundational patterns. Key Benefits Teams leveraging Fluent 2 achieves reduced complexity and improved performance Outlook, Windows, and Fluent combine into a customizable hub experience Focus Order annotation tool lets designers document interactive tab flow Color Contrast Checker ensures text readability per WCAG standards Content Reel pulls text strings, images, and icons from one palette for efficient layouts Icon Scaling Tool draws an icon once and scales to multiple sizes with a single click How It Works Designers start by installing the Fluent 2 Figma UI kits. They use the A11y Focus Order tool to annotate tab sequences, the Color Contrast Checker to verify text readability, and the Content Reel to access shared assets. Developers follow platform-specific installation guides, reference Web token documentation, and compose UI from Fluent 2 components on Web, iOS, Android, or Windows. Use Cases Microsoft product teams building or refreshing experiences in Teams, Outlook, or Windows Designers at Microsoft ensuring consistent brand expression across first-party apps Front-end developers needing platform-specific component libraries and token references Accessibility specialists verifying focus order and color contrast early in the design process Design operations teams maintaining a shared asset palette through Content Reel Icon designers generating multiple output sizes from a single source file Why Choose This Product Fluent 2 is best suited for teams building within or extending the Microsoft 365 ecosystem. It is free to use and publicly documented, but its design language, components, and tooling are purpose-built for Microsoft's product surface area rather than generic third-party application design.